实现考试归档并永久锁定成绩流程

src/database/schema.mjs

@@ -114,6 +114,8 @@ export const sqliteSchema = `
     pass_policy TEXT NOT NULL DEFAULT 'rank_percent' CHECK (pass_policy IN ('fixed_score', 'score_ratio', 'rank_percent', 'subject_scores', 'none')),
     pass_value REAL NOT NULL DEFAULT 60,
     status TEXT NOT NULL CHECK (status IN ('draft', 'published', 'closed')),
+    archived_at TEXT,
+    archived_by TEXT REFERENCES users(id) ON DELETE RESTRICT,
     created_at TEXT NOT NULL
   ) STRICT;
 
@@ -401,6 +403,7 @@ export const sqliteSchema = `
 
   CREATE INDEX IF NOT EXISTS idx_profiles_status ON candidate_profiles(status);
   CREATE INDEX IF NOT EXISTS idx_users_archive_scope ON users(role, school_id, class_id, archived_at);
+  CREATE INDEX IF NOT EXISTS idx_exams_archive ON exams(archived_at, exam_end);
   CREATE INDEX IF NOT EXISTS idx_profiles_scope ON candidate_profiles(school_id, class_id, status);
   CREATE INDEX IF NOT EXISTS idx_notices_status_publish ON notices(status, publish_at);
   CREATE INDEX IF NOT EXISTS idx_exams_status_registration ON exams(status, registration_start, registration_end);
@@ -417,6 +420,39 @@ export const sqliteSchema = `
   CREATE INDEX IF NOT EXISTS idx_account_batch_items ON candidate_account_batch_items(batch_id, class_id, position);
   CREATE INDEX IF NOT EXISTS idx_results_registration ON results(registration_id, published);
   CREATE INDEX IF NOT EXISTS idx_audit_created ON audit_logs(created_at);
+
+  CREATE TRIGGER IF NOT EXISTS trg_results_lock_archived_insert
+  BEFORE INSERT ON results
+  WHEN EXISTS (
+    SELECT 1 FROM registrations registration
+    JOIN exams exam ON exam.id = registration.exam_id
+    WHERE registration.id = NEW.registration_id AND exam.archived_at IS NOT NULL
+  )
+  BEGIN
+    SELECT RAISE(ABORT, '归档考试成绩已永久锁定');
+  END;
+
+  CREATE TRIGGER IF NOT EXISTS trg_results_lock_archived_update
+  BEFORE UPDATE ON results
+  WHEN EXISTS (
+    SELECT 1 FROM registrations registration
+    JOIN exams exam ON exam.id = registration.exam_id
+    WHERE registration.id IN (OLD.registration_id, NEW.registration_id) AND exam.archived_at IS NOT NULL
+  )
+  BEGIN
+    SELECT RAISE(ABORT, '归档考试成绩已永久锁定');
+  END;
+
+  CREATE TRIGGER IF NOT EXISTS trg_results_lock_archived_delete
+  BEFORE DELETE ON results
+  WHEN EXISTS (
+    SELECT 1 FROM registrations registration
+    JOIN exams exam ON exam.id = registration.exam_id
+    WHERE registration.id = OLD.registration_id AND exam.archived_at IS NOT NULL
+  )
+  BEGIN
+    SELECT RAISE(ABORT, '归档考试成绩已永久锁定');
+  END;
 `;
 
 export const mysqlSchema = [
@@ -553,10 +589,14 @@ export const mysqlSchema = [
     pass_policy ENUM('fixed_score', 'score_ratio', 'rank_percent', 'subject_scores', 'none') NOT NULL DEFAULT 'rank_percent',
     pass_value DOUBLE NOT NULL DEFAULT 60,
     status ENUM('draft', 'published', 'closed') NOT NULL,
+    archived_at VARCHAR(35) NULL,
+    archived_by VARCHAR(64) NULL,
     created_at VARCHAR(35) NOT NULL,
     PRIMARY KEY (id),
     UNIQUE KEY uq_exams_code (code),
-    KEY idx_exams_status_registration (status, registration_start, registration_end)
+    KEY idx_exams_status_registration (status, registration_start, registration_end),
+    KEY idx_exams_archive (archived_at, exam_end),
+    CONSTRAINT fk_exams_archived_by FOREIGN KEY (archived_by) REFERENCES users(id) ON DELETE RESTRICT
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci`,
   `CREATE TABLE IF NOT EXISTS exam_subjects (
     id VARCHAR(64) NOT NULL,